Novel transformation of aryl 2-iodophenyl ketones into 1,3-diarylisoquinolines with (TMS)2NH, styrenes, NIS, and BuOK
作者:Kaho Shibasaki、Hideo Togo
DOI:10.1016/j.tet.2020.131864
日期:2021.1
Treatment of aryl 2-iodophenyl ketones with TMS2NH in the presence of Sc(OTf)3 at warming conditions, followed by the reaction with styrenes and NIS gave N-(1-aryl-2-iodoethyl) aryl 2-iodophenyl ketimines. Further treatment of N-(1-aryl-2-iodoethyl) aryl 2-iodophenyl ketimines with tBuOK in the presence of 1,10-phenanthroline at 120 °C generated 1,3-diarylisoquinolines in moderate yields through SET
在温热条件下,在Sc(OTf)3存在下,用TMS 2 NH处理芳基2-碘苯基酮,然后与苯乙烯和NIS反应,得到N-(1-芳基-2-碘乙基)芳基2-碘苯基酮亚胺。在1,10-菲咯啉存在下,在120°C下用t BuOK对N-(1-芳基-2-碘乙基)芳基2-碘苯基酮亚胺进行进一步处理,通过SET将t BuOK转化为1,3-二芳基异喹啉碘苯基基团形成芳基,它们的6-endo-trig环化到乙烯基上,以及环化中间体的芳构化。本方法是由芳基2-碘苯基酮经两个步骤制备异喹啉核心的新颖方法。©2020爱思唯尔科学。版权所有。